Article Robert Gwynne (2021)
Sticking with steam – why Britain’s railways stayed loyal to Georgian technology into the ‘space age’. International Journal for the History of Engineering and Technology (pp. 1-26). (/isis/citation/CBB699478752/) unapi

Book Robert J. Yanosey (2017)
GG1: The World's Greatest Electric Locomotive Vol. 2: PC, Amtrak, Conrail, NJT, 1968-1983. (/isis/citation/CBB612168151/) unapi

Article J. Parker Lamb; Correa, Thomas (Spring-Summer 2016)
Railways in South America's Largest City. Railroad History (pp. 46-67). (/isis/citation/CBB821976640/) unapi

Book Robert J. Ysnosey (2016)
GG1: The World's Greatest Electric Locomotive Vol. 1, PRR, 1948-67. (/isis/citation/CBB701472698/) unapi

Book Brian Solomon (2009)
Alco Locomotives. (/isis/citation/CBB754760779/) unapi

Article Holland, Kevin J. (Spring/Summer 2009)
Amtrak’s F40PH. Railroad History (pp. 56-65). (/isis/citation/CBB427622974/) unapi

Article William D. Middleton (Fall-Winter 2008)
Electrification over the Sierra Nevada. Railroad History (pp. 8-15). (/isis/citation/CBB886794819/) unapi

Book McDonell, Greg (2008)
Locomotives: The Modern Diesel & Electric Reference. (/isis/citation/CBB761069376/) unapi

Book Graham-White, Sean (2007)
GE Evolution Locomotives. (/isis/citation/CBB320106829/) unapi

Book Joseph A. Strapac (2001)
Interurban electric locomotives from Baldwin-Westinghouse. (/isis/citation/CBB283653635/) unapi